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Marquise|Natural|IGI

0.50ct G SI2 Marquise Natural Diamond

VG • G/SI2 • IGI 800673801

Shape and cutting style on the report: Marquise brilliant

Certificate IGI 800673801

Diamond specifications and retailer prices

From $933 NZD
As of November 6, 2026
Save $2,240 NZD (71%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: $3,173 NZD at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 0.5ct natural marquise diamond

This 0.5ct natural marquise sits in the half to three-quarter carat band, graded G colour (near-colourless) and SI2 clarity (slightly-included), with a very-good cut grade and certified by IGI 800673801. Listed at 12 retailers as of November 5, 2026, with prices from $933 to $3,173, a $2,240 spread on the same certified stone. NZ Jewellers lists it at $3,173. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

0.50
Carat
G
Colour
SI2
Clarity
Very Good
Cut

Specifications

CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle32.3°
Pavilion angle39.4°
OriginNatural
Grading LabIGI
CertificateIGI 800673801
Dimensions9.01 × 3.95 × 2.52 mm
L/W Ratio2.28
Girdle conditionFaceted
Top View
9.01 mm3.95 mm0.50 ctG / SI2
OriginNatural
CutVery Good
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateIGI 800673801
Side View
Table 51.0%Crown 32.3°Girdle: MED-STKPavilion 39.4°Culet: NoneDepth 63.8%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: $3,173 NZD|Low: $855 NZD|High: $3,364 NZD|Avg: $1,468 NZD|-5.7%
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 6, 2026
Retailer 9$933 NZD
Retailer 10$1,012 NZD
Retailer 8$1,090 NZD
Retailer 11$1,090 NZD
Retailer 3$1,167 NZD
Retailer 2$1,201 NZD
Retailer 4$1,248 NZD
Retailer 12$1,257 NZD
Retailer 7$1,266 NZD
Retailer 6$1,503 NZD
Retailer 5$2,331 NZD
NZ Jewellers$3,173 NZD

45 data points across 12 retailers

12 retailers$933 NZD to $3,173 NZD

A
Cheapest Retailer
-
$933 NZD
Final sale: no returns
A
Retailer 2
-
$1,012 NZD
View
A
Retailer 3
-
$1,090 NZD
View
Retailer 4
-
$1,090 NZD
View
Price last confirmed 8 days ago
A
Retailer 5
-
$1,167 NZD
View
A
Retailer 6
-
$1,201 NZD
View
B+
Retailer 7
-
$1,248 NZD
View
B+
Retailer 8
-
$1,257 NZD
View
B+
Retailer 9
-
$1,266 NZD
View
B+
Retailer 10
-
$1,503 NZD
View
B
Retailer 11
-
$2,331 NZD
View
Most Expensive
B
NZ Jewellers
7363867a-f6cf-4c08-82b2-f9a2b242e147 · Nov 5
$3,173 NZD
$1,759 USD
View
11 more retailers have this diamond
Prices start from $933 NZDSave up to $2,240 NZD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
0.50ct Marquise
$933 NZD